Results 171 to 180 of about 17,335 (216)

Photodegradation of polyoxymethylene

Polymer Photochemistry, 1981
Abstract The effect of photo-irradiation conditions on the photodegradation of polyoxymethylene is examined by the changes in mechanical property, weight loss, infra-red-, ultra-violet- and luminescence spectra and surface appearance of the polymer. The photodegradation of the polymer is extremely susceptible to the wavelength of the irradiated light.
O. Nishimura, Z. Osawa
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Photodegradation and photostabilization of polymers

Journal of Photochemistry, 1984
L'origine des impuretes photosensibilisantes dans les polymeres. Photostabilisation des polymeres.
openaire   +1 more source

Photodegradation of polyolefins

[1991] Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials, 2002
The photodegradation behavior of a propylene/ethylene copolymer has been investigated and compared to the degradation of a polypropylene homopolymer. The materials contained small amounts of thermal stabilizers, but no photo-stabilizers. The development of carbonyl and hydroxyl oxidation species was followed by infrared spectroscopy, but this was not a
M.E. Austin, D.J.T. Hill, J.H. O'Donnell, P.J. Pomery   +3 more
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Photodegradation

2015
Photodegradationconcerns the breaking of a molecule to smaller molecules (degradation and/or mineralization) by means of the absorption of photons of suitable wavelength such as that found in the infrared radiation, visible light and ultraviolet light of the solar spectrum.
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Photodegradation of calixarenes

Dyes and Pigments, 1996
Calixarenes are interesting compounds with respect to their high melting points and complexing properties. Spectroscopic characteristics and photochemical stability data are reported in these present studies of quantum yield of fluorescence, phosphorescence and photodegradation. The photodegradation occurs from the triplet state.
P. Méallier, A. Gudefin, N. Ehlinger, M. Perrin   +3 more
openaire   +1 more source

Photodegradable polyethylene

Journal of Applied Polymer Science, 1975
AbstractPolymer photodegradation can be achieved by introducing carbonyl groups which absorb radiations above the 300 mμ wavelength and thus are sensitized by solar or atmospheric radiations.We introduced these groups in polyethylene by oximation of aliphatic chain with photoactivated NOCI and hydrolysis of the oxime.Modified polymers show, during ...
Vittorio Pozzi, Arthur E. Silvers, L. Giuffrè, E. Cernia   +3 more
openaire   +1 more source

Photodegradation of Benthiocarb

Chemistry and Ecology, 1996
Abstract The photodegradation of 14C-benthiocarb in water, on a glass surface, on soil and silica gel TLC plates was studied. the study was designed to obtain some information of its dissipation and photodegradation under various laboratory conditions. Benthiocarb degrades readily when exposed to either sunlight or UV light (254 nm).
Hong-Ming Cheng, Deng-Fwu Hwang
openaire   +1 more source

Photodegradation of fenarimol

Pest Management Science, 2000
The photodegradation of aqueous alcoholic solutions of fenarimol at λ ≥ 250 nm has been examined. UV irradiation of an aqueous methanolic solution for 24 h yielded two photoproducts, identified as 2,4′-dichlorobenzil and p-chlorobenzoic acid, while irradiation of a solution in aqueous isopropanol yielded p-chlorobenzoic acid and two additional products
Nivedita Sur, Srikumar Pal, Hemanta Banerjee, Narayan Adityachaudhury, Anjan Bhattacharyya   +4 more
openaire   +1 more source

Photodegradation of leptophos

Bulletin of Environmental Contamination and Toxicology, 1979
M R, Riskallah, E G, Esaac, M M, El-Sayed   +2 more
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PHOTODEGRADATION OF DACARBAZINE

The Lancet, 1978
G M, Baird, M L, Willoughby
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